Improvement in pumps



N. iP. SHELDON. PUMP.

No. 110,936. Patented Jam. `10, i1-A4871,

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NATHANIEL SHELDCN, 'OF SAN FRANCISCO, ASSIGNCR TC HIMSELF AND WM. n. HALL, or sAN'Josn, o ALrroRNIA IlettersPatent No. 110,936, dated January 10, 1871.

' IMPRovEMENT iN Pumps.

The Schedule referred tain these Letters Patent and making part of the same.

The first part of my'invention relates to the combination of a series ot' cylinders, of any required number, with a frame o1; shell i'n which they are hung upon axles, in such a manner that they may revolve together around a common center.

The second part of my invention relates to the' combination of a series of plungers,corresponding in number' to the number of cylinders used with a device, hereinafter described as anlunger-w-heel, in such a manner that the plungersfmay revolve withthe cylindels.

The third part of my invention relates to the coinbination of the plunger-wheel with a shaft, set eccentric to or upon one side ofthe driving-shaft, in such aC manner as to hold the centerof motion in the plungers to a different center from that of the cylinders.

. 'lhe fourth part of my invention relates to the combination of the plunger-Wheeln'h the frame or driving-shaft by means ot' gears or other" device, in such a manner that any motion communicated to oneshall cause the other to move in' the same direction, and compel both to maketlleir revclut'ion in the same space of time.

Description of the Accompanying Drawing.v

Figure I'is a vertical transverse section of a ma- A is a metal frame or shellnith circular openings in its circumference corresponding in number and size to the cylinders B, which are hung 'therein upon the axles G, secured tothe frame.

D is a gland, for securing packing around the cylinders.

In the center of the frame A, up"on one side, is au opening surrounded by a stuffing-box, or other device, for packing around the bearing upon thel dischargepipe E, around which the frame revolves. Upon the opposite side this frame has a large opening, covered by the dange F, attached to the driving-shaft G. The cylinders B are short metal cylinders, with their outer ends, which oscillate upon the axles C, turned to a section of a globe, of which the axles represent the center.-

The plungers H have ports, covered by a valve.

The plunger-rods I are attached to the plunger 'by a rigid attachment, and to the plunger-wheel K by a loose attachment or joint.

The plunger-wheel K has the gear-wheel L cast upon or rigidly attached; to it.k This gear meshes into vthe intermediate gear-wheels L1, which meshes into the gear-wheel L2, rigidly attached to the i-ange F, upon line with the driving-shaft G.

The gear-wheels L and L2 should be of like diame- Vte'raud number of pegs, thus' compelling them, with -the instruments to Whichthey are attached through the agency the, intetmediate gearfivlieel L1, to make their respective 'revolutions in the same space ofv time.

G' is a stationary shaft, set firmly into the discharge-pipe E. This shaft forms a bearing for theV plunger-wheelR, which revolves around it.

M is a collar or box, inclosing the gears, and is held in position by. bearings upon the shaits G and G; Ait also forms a bearing for the shaft upon which the intermediate gear L1 revolves.

- The gnidesN upon the inner ends of the cylinders through which the plunger-rods pass, are for the pur- `pose of keepingthe cylinders upon `a line With the plungers.

The valve-seats O should be so inserted in the cylinders luy-screws, or other device, that they may be easily removed, and the plungers' similarly attached to their rods, thus giving easy access to all the valves without taking the pump apart.

D' isa gland for the packing between the frame and discharge-pipe.

Th'e foregoing description represents the application of my invention as a submerged pump butl contemplate and propose applying it in a suction and force pumpin the following-described ways; to wit: A

First, by inclosing l:he pump `constructed and arranged as herein described in au outerv shell or case, with a suction-pipe inserted-therein.

Second, by placing the valves with the pump thus inclosed upon the outside of their valve-seats, thus causing them to open by pressure from without, and close by pressure from within, change the dischargepipe E to a suction pipe, and discharge through the pipe in the outer shell.

The revolution of Vthe plungers and cylindersv around their respective centers in the same space of time maybe vcontrolled/by attaching the plungerwheel K rmly to the shaft G, extending said shaft.

through the pipe E, placing the gear-wheels Land L upon the outside of shafts G and G', outsideof the Vtach'ed to a parallel shaft, `or a stiff rod may be- 'theirrevolution's, as seen bythe ciroular-dotted'lines iu fig. 1; but, owing to the different positions of their respective centers, any given point in the circle' described by the cylindersy gradually -approaches the circle described by the plungers during one-half of a revolution, and passes away from them during the other half, thus passing each cylinder` back 'and forth over its plunger to the extent of the lengthjof the stroke once durngevery revolution, thereby causing them to be filled and discharged.

The line X X drawn. across the iig. 1 cuts the points between the snctiouaud discharge.l

While the outer end of the cylinder ,is passing away from the plunger the valve upou the plunger remains closed by the pressure Afrom within, .and the waterbefore it is held in place, and the movement of the cylinder forces the discharge, at the same time receiving water from the outside port with the open valve.

When the reverse motion takes place the valve upon the port in the plunger opens, closing the outer port by pressure upon the valve from Within, and the wa- -ter passes throng-l1 the plungerport.

The pressure of the discharging column of Water upon the plunger when its port is closed is communicatedthrough its rod to the plunger-Wheel, audacting upon said wheel at an angle, as seen in fig. l, and thence through the gears upon the frame, operates as a power to force or revolve the pump in the Vrequired direction, thus making the discharging column of Wa ter a lever to itself.

I claim as my invention- 1. The combination of the cylinders B iviththe revolving frame A, substantially as and for the purpose hereinbefore set forth.

2. The combination with thev plunger H and the plunger-wheel K, placed eccentricallyto the revolving'cylinder A, substantially as and for the purpose hereinbefore set forth.

3. The combination of the plunger-wheel K with the frame A and gear L, intermediate gear L1, and gear L2, substantially as and for the purpose set forth.

NATHANIEL P. SHELDON.

Witnesses W. H. WASTE, WALTER GLASS. 

